Source: J. Shiskin At NBER, Table V090, January 4, 1965
This NBER data series m16054 appears on the NBER website in Chapter 16 at http://www.nber.org/databases/macrohistory/contents/chapter16.html.
NBER Indicator: m16054
Release: NBER Macrohistory Database
National Bureau of Economic Research, Cumulated Net Diffusion Index, Employees In Nonagricultural Establishments, Thirty Industries, Six Month Span for United States [M16054USM461SNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/M16054USM461SNBR/, August 28, 2015.